Water Rocket Forum

Welcome to the Water Rocket Forum, sponsored by The Water Rocket Achievement World Record Association.

The largest, most sophisticated and ground breaking group supporting you, the serious water rocket flyer! Whether you are a beginner or an expert, the WRA2 has something for everyone.

A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel (the engine of the rocket) is constructed from thin plastic or other non metallic materials (usually a used plastic soft drink bottle) weighing 1,500 grams or less. The water is forced out by compressed air. It is an example of Newton's third law of motion.

Hi, I have a question. Do we really have to use logging altimeters for all competitions? Because some countries are not selling any altimeters, including the PH. I really wanted to break the current Class B record, but because I haven't found any local online stores that sells the latter, I couldn't beat the record. How about using the traditional trigonometric altimeter (protractor)? At least we have solid proof on the altitude measurement. Well a video camera can reinforce the altitude measurement.